CVE-2022-50713
Memory Leak in Linux Kernel visconti PLL Registration
Publication date: 2025-12-24
Last updated on: 2025-12-24
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a memory leak in the Linux kernel's visconti clock driver. Specifically, when the function visconti_register_pll() allocates memory for pll->rate_table using kmemdup(), if the subsequent clk_hw_register() call fails, the allocated memory is not freed, causing a memory leak. The patch fixes this by ensuring the allocated memory is properly freed on failure.
How can this vulnerability impact me? :
The memory leak can lead to increased memory usage over time, potentially degrading system performance or causing resource exhaustion if the failure condition occurs repeatedly. This could affect system stability and reliability.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Linux kernel to a version that includes the fix for the memory leak in visconti_register_pll(). This patch ensures that allocated memory by kmemdup() is properly freed if clk_hw_register() fails, preventing the memory leak.